TPRA1 and bladder transitional cell carcinoma: Consistent with these findings, immunohistochemistry analysis on tissue microarrays of tumor and adjacent normal tissues further demonstrated that TPRA1 expression is selectively upregulated in 76% of lung adenocarcinoma, 55% of bladder urothelial carcinoma, and 53% of prostate adenocarcinoma cases compared to their corresponding normal tissue (Figure 6E,F).